Remember in this passage that Paul is not trying to return Christians to a legalistic state as he was in as a Pharisee. Not eating meat isn't some return to the hundreds of rules of Paul's Judaism, but is instead part of the bigger picture for creating a new kind of community among others. Not eating meat sacrificed to idols was also a particularly hard mandate for the poor among believers, who might have depended on this as a food source. Instead, they should be cared for by their fellow brothers and sisters.